Knuckle-pin retainer for car-couplings.



c. F. MURRAY. KNUCKLE PIN RETAINER FOR CAR COUPLINGS.

. APPLIOATION FILED APBHIO, 1908.

1,026,278. Patented May 14, 1912.

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COLUMBIA PLANOUIIAPII C0.,WASH|NUTON, D. C.

UNITED STATES PATENT OFFICE.

CHARLES FREDERIO MURRAY, OF CHICAGO, ILLINOIS, ASSIGNOR 'IO AMERICAN STEEL FOUNDRIES, OF CHICAGO, ILLINOIS, A CORPORATION OF NEW JERSEY.

KNUCKLE-PIN RETAINER FOR CAR-COUPLINGS.

To all whom it may concern:

Be it known that I, CHARLES Fnunnmc MURRAY, a citizen of the United States, residing at Chicago, Cook county, Illinois, have invented certain new and useful Improvements in Knuckle-Pin Retainers for Car-Couplings, of which the following is a specification.

My invention relates to car couplers of the passenger type and has particular reference to the means for retaining in place the knuckle pin thereof.

As is well known in the art, car couplers of the passenger type are placed beneath the platform buffers and therefore are inaccessible from the top. It becomes necessary for that reason to provide knuckle pins which may be removed from the bottom instead of from the top as is the custom with freight car knuckle pins. It is quite common for a knuckle to be broken in use, and if its replacement required the removal of the entire coupler a great deal of work would be involved. It is also advisable in devising a means of this sort to provide something simple and eflicient and which has no loose parts which may become lost through care lessness of employees and which shall provide against the knuckle pin creeping up as well as falling down.

With these ends in view I have devised the improvements as disclosed in the accompanying drawings wherein Figure 1 is a side elevation of a coupler head showing the knuckle pin retainer, of my invention. Fig. 2 is a bottom plan thereof and Fig. 3 is a view showing the lower portion of a knuckle pin adapted for use in my device.

Referring to Fig. 1, 10 is the coupler head of the well-known form of Janney type of coupler; 11 is the locking knuckle adapted for swinging movement; 12 is the knuckle pin which is of uniform diameter throughout and is provided with a longitudinal slot 13 at its lower end and an aperture 14: running at right angles thereto. Depending from the lower portion of the coupler head 10 is a boss or lug 15 provided with an aper- Specification of Letters Patent.

Application filerl April 10, 1908.

Patented May 14, 1912.

Serial No. 426,274.

ture for the accommodation of a pin or bolt 16. Depending and swinging from this bolt 16 is an arm 17, the outer portion 17 of which normally occupies a horizontal position, immediately below the knuckle pin 12, and adapted when in use to seat in the slot 13.

The operation is substantially as follows: \Vhen the coupler is to be assembled, the knuckle 11 is placed in position, the pin is driven upwardly past the plane of the depending and swinging arm 17, thereby allowing such arm to swing underneath the slot 13 in pin 12. The pin is then forced downwardly until the arm occupies its position in the slot 13, whereupon a pin 18 is placed below it in hole 14 and the device is then in working order. of using pin 18 a pin or cotter may be placed in and protrude from an aperture 19 in the knuckle pin directly below the coupler head with the same effect, that is, to prevent upward creeping of the knuckle pivot pin.

Having described my invention, 1 claim as new and desire to secure by Letters Patent 1. A car coupler comprising, in combination, a coupler head, a knuckle, a knuckle pivot pin provided with a longitudinally extending slot in its lower end, and a gravity actuated arm pivoted to the lower portion of said coupler head said arm having a portion adapted to project into the slot in said pivot pin, substantially as described.

2. In a knuckle pin retainer for car couplers, the combination with the coupler head, knuckle and knuckle pin, said head being provided on its under face with a perforated lug and said knuckle pin being provided with a transversely extending aperture, of a key formed with an eye and extending into the aperture of the knuckle pin, and a headed pin extending through the eye in said key and engaging the perforated lug on the under side of the coupler.

CHARLES FREDERIG MURRAY.

WVitnesses:

GEO. A. sCI-IAEFER, C. H. HUGHES.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

If desired, instead 

